Brewster Angle Calculator

Calculate Brewster's angle at which reflected light is fully polarized: theta_B = arctan(n2/n1).

Brewster Angle

56.31 °

Brewster Angle vs Refractive Index 1

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Formule

## Brewster's Angle At Brewster's angle, reflected light is completely polarized, with the reflected and refracted rays perpendicular to each other. ### Formula **theta_B = arctan(n2 / n1)** At this angle, the reflected light contains only the s-polarization (perpendicular to the plane of incidence).

Exemple Résolu

Light reflecting off glass (n=1.5) from air (n=1).

  1. 01theta_B = arctan(n2/n1)
  2. 02theta_B = arctan(1.5/1)
  3. 03theta_B = arctan(1.5)
  4. 04theta_B = 56.31°